CN206353126U - A kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device - Google Patents
A kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device Download PDFInfo
- Publication number
- CN206353126U CN206353126U CN201621353661.3U CN201621353661U CN206353126U CN 206353126 U CN206353126 U CN 206353126U CN 201621353661 U CN201621353661 U CN 201621353661U CN 206353126 U CN206353126 U CN 206353126U
- Authority
- CN
- China
- Prior art keywords
- gas
- module
- path module
- nafion
- dehydration device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device, including liquid circuit module, gas path module, light path module and control module, the control module is used to send control signal to the liquid circuit module, gas path module and light path module, the data-signal fed back from liquid circuit module, gas path module and light path module can also be received simultaneously, infiltration absorption dehydration device is set between the Separate System of Water-jet and extinction pipe of the gas path module, and the infiltration absorption dehydration device is managed for Nafion.The utility model can effectively remove water, the alcohols of Interference Detection；Vapour pressure gradient of the driving force of Nafion materials inside and outside pipe, rather than pressure differential or temperature difference, therefore the effect on moisture extraction that can be reached is much better than existing dehumidification by condensation scheme；And phase transformation factor is not present in the absorption process of steam, dehumidification process does not produce extra influence to gas conveying environment, and gas will not be caused to be re-dissolved in condensation or occur the situation of line clogging.
Description
Technical field
The utility model belongs to Instrumental Analysis field, and in particular to a kind of gas molecule in space using infiltration absorption dehydration device
Absorption spectrometer.
Background technology
Gas-phase molecular absorption spectrometry method is a kind of easy, the quick analysis means risen 1970s.1976
Toyin A.Arowolo, Malcolm S.Cresser et al. propose the method (Gas-Phase first
MolecularAbsorption Spectrometry, abbreviation GPMAS), Syty determines SO using the method at first2, and design
Air blowing reaction unit.Hereafter analysts successfully determine corrosivity, such as volatile gas, I2And Br2、H2S、NOCl、
HCN、NO2And NO, Rechikov et al. determine B in the hydride gas for the inert gas mixing of semiconductor technology,
N, P, As, Sb, Si, Ge, Sn hydride.Syty determines sulfide using GPMAS, and devises gas-liquid separation device, will
Determine the H2S produced after solution acidifying and be loaded into measuring system measure sulfide with nitrogen.
Gas-phase molecular absorption spectrometry method is that a kind of measurement side of specific UV spectrum can be absorbed using the gas molecule of ground state
Method, using the molecular vibration absorption principle of gas, certain linear relationship is presented with absorbance in gas concentration：When luminous intensity is I0
The light velocity by sample concentration be C gas when, luminous intensity weakens to I, and it follows Lambert-Beer's law.
First by chemical reaction, the ion or molecule in the aqueous solution are converted into certain gas.Gas molecule is not
In the case of by ectocine, relatively steady state, referred to as ground state gas molecule are generally in.But, once these gas
When body molecule receives the light radiation of specific wavelength, it is easy to produce corresponding molecular vibration.Energy needed for generation molecular vibration
It is certain, this specific energy is referred to as characterization of molecules spectral line.In gas-phase molecular absorption spectrometry method, the light of specific wavelength is selected
Source, the characteristic wavelength light that gaseous molecular is sent to the light source produces molecular vibration absorption, is calculated according to light by degree of absorption
Molecular concentration.
Because characteristic gas is purged out in autoreaction solution, therefore steam contained in reaction solution also follows feature gas
Body enters extinction pipe, can severe jamming testing result because steam has wide band absorption to light.
In order to remove steam contained in gas to be detected, wet method, existing gas can be removed using chemical de-moisture or cryogenic temperature condensation
Phase molecule absorption spectrometer typically removes wet method using cryogenic temperature condensation.Cryogenic temperature condensation is except wet method is by the way of reduction temperature so that
The temperature of gas is dropped under the dew point far below current humidity, and the condensation vapor in gas is water droplet so that under test gas
Water content be greatly reduced.But：
Some under test gas may again be absorbed by steam condensation caused by low temperature, cause testing result relatively low；
Low temperature may cause steam condensation to freeze, and cause condenser pipe to block so that detection can not be carried out；
Due to the reason, condensation such as other influences factor in the heat conduction efficiency, cryogenerator operating efficiency, environment of material
Temperature inside dehumidifying pipeline is difficult to accurate control, causes the target dew point for flowing through the gas containing steam of dehumidifying pipeline to exist and differs
Cause, be easily caused the gas water content after dehumidifying and there is gap, result error is easily caused when carrying out high precision test.
Utility model content
Utility model purpose：To overcome the deficiencies in the prior art, the utility model provides a kind of using infiltration absorption dehydration
The gas phase molecular absorption spectrometer of device, can effectively remove water, the alcohols of Interference Detection.
Technical scheme：To achieve the above object, the utility model proposes a kind of gas using infiltration absorption dehydration device
Phase molecule absorption spectrometer, it is characterised in that including sampling system, sample and reagent hybrid system, reaction and catalytic reaction system
System, source of the gas, Separate System of Water-jet, infiltration absorption dehydration device, extinction pipe, light source, optical splitter, photo-detector and control module
And signal processing system, wherein,
Described sampling system, sample and reagent hybrid system, reaction and catalytic reaction system, Separate System of Water-jet are successively
It is connected and constitutes liquid circuit module；
Described source of the gas, Separate System of Water-jet, infiltration absorption dehydration device and extinction pipe is sequentially connected composition gas path module,
Described infiltration absorption dehydration device is managed for Nafion；
Described light source, extinction pipe, optical splitter, photo-detector are sequentially connected composition light path module；
The control module includes information processing system, and the control module is used for the liquid circuit module, gas path module
Control signal is sent with light path module, while the number fed back from liquid circuit module, gas path module and light path module can also be received
It is believed that number and handled.
Specifically, the control module operates the liquid circuit module, and the classes of agents needed for sample and reaction is by sample introduction system
System introduces liquid circuit module, is mixed it by needed for detection reaction by sample and reagent hybrid system, feeding reaction and catalytic reaction
System, reagent makes by well-mixed sample and examination in reaction and catalytic reaction system according to the detection demand of target substance
Agent is chemically reacted；Wherein, the mode of catalytic reaction includes but is not limited to using modes such as catalyst, heating, photocatalysis.Instead
Sample and reagent mixture after answering are admitted to Separate System of Water-jet.
Control module controls gas path module, and detection is pressed into Separate System of Water-jet by source of the gas with carrier gas, available for detection sample
The characteristic gas of middle target substance content takes Separate System of Water-jet out of by carrier gas, mixed gas by the absorption dehydration device that seeps water,
The materials such as steam, the alcohols of wherein easy disturbed test are removed, and the mixed gas after being cleaned enters in extinction pipe.
Control module controls the characteristic gas brought into light path module, the light irradiation extinction pipe that light source is sent by carrier gas, one
Part light is absorbed by the gas in extinction pipe, and remaining light passes through optical splitter, i.e. filter system, and selection test substance absorbs effect
Strong feature light beam is answered, its luminous intensity is converted by the optical detector into corresponding electric signal, and the change of signal is to be measured available for determining
The content of material.
Preferably, the liquid circuit module and gas path module are connected with waste liquid, waste gas discharge collection processing system implementing respectively, detect
During the waste liquid, the waste gas that generate be fed in the waste liquid, waste gas discharge collection processing system implementing.
Preferably, the Nafion pipes are outer is equipped with cyclic drying wind apparatus, the gas that the cyclic drying wind apparatus is supplied
Stream should be dried and without material to be absorbed in Nafion pipes, and the air-flow velocity supplied should be at least Nafion pipe interior air-flow streams
More than 2~3 times of speed.
The drying of under test gas is carried out using Nafion pipes, the steam of Interference Detection under test gas can be effectively removed
And alcohols.It is polytetrafluoroethylene (PTFE)With being total to for perfluor -3,6- diepoxy -4- methyl -7- decene-sulfuric acid
Polymers.Simple Nafion is Teflon structures with another interim side chain of fluorine carbon, the terminal of side chain be a sulfonic group (-
SO3H), because sulfonic group has very high hydrophily, so the moisture content that Nafion tube walls absorb, can be another from a sulfonic acid basal orientation
One sulfonic group transmission, the tube wall until eventually arriving at other side, and moisture content is all evaporated in dry blowback air by band
Walk.This phenomenon is referred to as pervaporation (Pervapormion).The driving force of Nafion pipes dehumidifying is the vapour pressure ladder inside and outside pipe
Spend (i.e. psychrometric difference), rather than pressure differential or temperature difference.Because even Nafion overpressures are less than the pressure around it, Nafion
Gas can be dried in the same old way.As long as the inside and outside psychrometric difference of pipe is present, the migration of vapor with regard to carrying out all the time, it is therefore desirable to dry
Opposite side blowback of dry, clean, the continuous blowback air (air or nitrogen) in Nafion pipes.Nafion pipes dehumidified continuously
Cheng Zhong, is fully retained SO in flue gas2、SO3、NO、NO2、HCl、HF、O2、CO、 CO2Etc. under test gas, the i.e. only removal of selectivity
Moisture content in flue gas.Meanwhile, Nafion tubings are similar to Teflon, with extremely strong acid resistance corrosive power.
By the characteristic of Nafion pipes, be placed on before extinction pipe, can effectively remove under test gas to detection have compared with
Water, the alcohols disturbed greatly.
Preferably, the Nafion pipes air inlet end should have heater so that Nafion pipe air intake temperature is higher than
Environment temperature, air outlet temperature outside Nafion pipes are equal to or less than the environment temperature outside Nafion pipes.
Preferably, the optical splitter in the light path module is short logical filter, such as ultraviolet filter.
Photo-detector in the light path module is photosemiconductor detector or electron tube detector, and the photosemiconductor is visited
Survey device is in silicon photoelectric diode, imaging sensor, ccd image sensor, cmos image sensor, NMOS imaging sensor
Any one；The electron tube detector is any one in photomultiplier, photoelectric tube, electron multiplier, MCP.
Beneficial effect：Compared with prior art, the utility model between Separate System of Water-jet and extinction pipe by setting
Seep water absorption dehydration device (Nafion pipes), can effectively remove water, the alcohols of Interference Detection；Due to the work of Nafion materials
It is " infiltration absorbs ", vapour pressure gradient (i.e. psychrometric difference) of its driving force inside and outside pipe, rather than pressure differential or temperature to make principle
Degree is poor, therefore the effect on moisture extraction (being judged using " dew point " as equivalent merit) that can be reached is much better than existing dehumidification by condensation side
Case；Because phase transformation factor is not present in the absorption process of steam, dehumidification process does not produce extra influence to gas conveying environment, no
Gas can be caused to be re-dissolved in condensation or occur the situation of line clogging.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Embodiment
The utility model patent is further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device is present embodiments provided,
Absorbed including sampling system, sample and reagent hybrid system, reaction and catalytic reaction system, source of the gas, Separate System of Water-jet, infiltration
Drying device, extinction pipe, light source, optical splitter, photo-detector and control module and signal processing system, wherein,
Sampling system, sample and reagent hybrid system, reaction and catalytic reaction system, Separate System of Water-jet are sequentially connected structure
Into liquid circuit module；
Source of the gas, Separate System of Water-jet, infiltration absorption dehydration device and extinction pipe are sequentially connected composition gas path module；
Light source, extinction pipe, optical splitter, photo-detector are sequentially connected composition light path module；
Control module includes information processing system, and the control module is used for the liquid circuit module, gas path module and light
Road module sends control signal, while can also receive the data letter fed back from liquid circuit module, gas path module and light path module
Number and handled.
Wherein, the infiltration absorption dehydration device used is managed for Nafion, and Nafion pipes are outer to be equipped with cyclic drying wind apparatus, follows
The air-flow that ring drying wind apparatus is supplied should be dried and without material to be absorbed in Nafion pipes, the air-flow velocity supplied should be extremely
It is more than 2~3 times of Nafion pipe interior air-flow flow velocitys less.
The drying of under test gas is carried out using Nafion pipes, the steam of Interference Detection under test gas can be effectively removed
And alcohols.It is polytetrafluoroethylene (PTFE)With being total to for perfluor -3,6- diepoxy -4- methyl -7- decene-sulfuric acid
Polymers.Simple Nafion is Teflon structures with another interim side chain of fluorine carbon, the terminal of side chain be a sulfonic group (-
SO3H), because sulfonic group has very high hydrophily, so the moisture content that Nafion tube walls absorb, can be another from a sulfonic acid basal orientation
One sulfonic group transmission, the tube wall until eventually arriving at other side, and moisture content is all evaporated in dry blowback air by band
Walk.This phenomenon is referred to as pervaporation (Pervaporation).The driving force of Nafion pipes dehumidifying is the vapour pressure inside and outside pipe
Gradient (i.e. psychrometric difference), rather than pressure differential or temperature difference.Because even Nafion overpressures are less than the pressure around it,
Gas can be dried in the same old way by Nafion.As long as the inside and outside psychrometric difference of pipe is present, the migration of vapor is needed with regard to carrying out all the time
Dry, clean, continuous blowback air (air or nitrogen) Nafion pipes opposite side blowback.Nafion pipes are continuously being removed
During wet, SO in flue gas is fully retained2、SO3、NO、NO2、HCl、HF、O2、CO、 CO2Etc. under test gas, i.e. a selectivity
Remove the moisture content in flue gas.Meanwhile, Nafion tubings are similar to Teflon, with extremely strong acid resistance corrosive power.By Nafion
The characteristic of pipe, is placed on before extinction pipe, can effectively remove water, the alcohol disturbed under test gas to detection
Class.
There should be heater in Nafion pipes air inlet end so that Nafion pipe air intakes temperature is higher than the ring outside Nafion pipes
Border temperature, air outlet temperature are equal to or less than the environment temperature outside Nafion pipes.
Optical splitter in light path module is short logical filter, such as uses ultraviolet filter.Photo-detector in light path module
For photosemiconductor detector or electron tube detector, photosemiconductor detector is silicon photoelectric diode, imaging sensor, CCD figures
As any one in sensor, cmos image sensor, NMOS imaging sensors；Electron tube detector be photomultiplier,
Any one in photoelectric tube, electron multiplier, MCP.
The course of work of the present utility model is as follows：Control module operates liquid circuit module, all kinds of examinations needed for sample and reaction
Agent introduces liquid circuit module by sampling system, is mixed it by needed for detection reaction by sample and reagent hybrid system, feeding reaction
And catalytic reaction system, reagent makes by being sufficiently mixed in reaction and catalytic reaction system according to the detection demand of target substance
Sample and reagent chemically reacted；Wherein, the mode of catalytic reaction includes but is not limited to urge using catalyst, heating, light
The modes such as change.Reacted sample and reagent mixture are admitted to Separate System of Water-jet.
Control module controls gas path module, and detection is pressed into Separate System of Water-jet by source of the gas with carrier gas, available for detection sample
The characteristic gas of middle target substance content takes Separate System of Water-jet out of by carrier gas, mixed gas by the absorption dehydration device that seeps water,
The materials such as steam, the alcohols of wherein easy disturbed test are removed, and the mixed gas after being cleaned enters in extinction pipe.
Control module controls the characteristic gas brought into light path module, the light irradiation extinction pipe that light source is sent by carrier gas, one
Part light is absorbed by the gas in extinction pipe, and remaining light passes through optical splitter, i.e. filter system, and selection test substance absorbs effect
Strong feature light beam is answered, its luminous intensity is converted by the optical detector into corresponding electric signal, and the change of signal is to be measured available for determining
The content of material.
Wherein, liquid circuit module and gas path module are connected with waste liquid, waste gas discharge collection processing system implementing respectively, in detection process
Waste liquid, the waste gas of generation are fed in waste liquid, waste gas discharge collection processing system implementing, it is to avoid cause environmental pollution.
The utility model between Separate System of Water-jet and extinction pipe by setting infiltration absorption dehydration device (Nafion
Pipe), it can effectively remove water, the alcohols of Interference Detection；Because the operation principle of Nafion materials is " infiltration absorbs ", it drives
Vapour pressure gradient (i.e. psychrometric difference) of the power inside and outside pipe, rather than pressure differential or temperature difference, therefore the dehumidifying that can be reached
Effect (being judged using " dew point " as equivalent merit) is much better than existing dehumidification by condensation scheme；Because the absorption process of steam is not deposited
In phase transformation factor, dehumidification process does not produce extra influence to gas conveying environment, will not cause gas be re-dissolved in condensation or
Occurs the situation of line clogging.
Described above is only the preferred embodiment of the utility model patent, it should be pointed out that：For the general of the art
For logical technical staff, on the premise of the utility model patent principle is not departed from, some improvements and modifications can also be made, this
A little improvements and modifications also should be regarded as the protection domain of the utility model patent.
Claims (6)
1. a kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device, it is characterised in that including sampling system, sample
Product and reagent hybrid system, reaction and catalytic reaction system, source of the gas, Separate System of Water-jet, infiltration absorption dehydration device, extinction
Pipe, light source, optical splitter, photo-detector and control module, wherein,
Described sampling system, sample and reagent hybrid system, reaction and catalytic reaction system, Separate System of Water-jet are sequentially connected
Constitute liquid circuit module；
Described source of the gas, Separate System of Water-jet, infiltration absorption dehydration device and extinction pipe is sequentially connected composition gas path module, described
Infiltration absorption dehydration device be Nafion pipe；
Described light source, extinction pipe, optical splitter, photo-detector are sequentially connected composition light path module；
The control module is used to send control signal to the liquid circuit module, gas path module and light path module, while can also
Receive the data-signal fed back from liquid circuit module, gas path module and light path module.
2. gas phase molecular absorption spectrometer according to claim 1, it is characterised in that the liquid circuit module and gas path module
It is connected respectively with waste liquid, waste gas discharge collection processing system implementing, waste liquid, the waste gas generated in detection process is fed to described useless
In liquid, waste gas discharge collection processing system implementing.
3. gas phase molecular absorption spectrometer according to claim 1, it is characterised in that the Nafion pipes are outer to be equipped with circulation
Wind apparatus is dried, the air-flow that the cyclic drying wind apparatus is supplied should be dried and without material to be absorbed, institute in Nafion pipes
The air-flow velocity of supply should be at least more than 2~3 times of Nafion pipe interior air-flow flow velocitys.
4. gas phase molecular absorption spectrometer according to claim 3, it is characterised in that the Nafion pipes air inlet end should have
Heater so that Nafion pipe air intakes temperature is equal to or less than higher than the environment temperature outside Nafion pipes, air outlet temperature
Environment temperature outside Nafion pipes.
5. gas phase molecular absorption spectrometer according to claim 1, it is characterised in that the optical splitter in the light path module
For short logical filter.
6. gas phase molecular absorption spectrometer according to claim 1, it is characterised in that the optical detection in the light path module
Device be photosemiconductor detector or electron tube detector, the photosemiconductor detector be silicon photoelectric diode, imaging sensor,
Any one in ccd image sensor, cmos image sensor, NMOS imaging sensors；The electron tube detector is light
Any one in electric multiplier tube, photoelectric tube, electron multiplier, MCP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621353661.3U CN206353126U (en) | 2016-12-09 | 2016-12-09 | A kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621353661.3U CN206353126U (en) | 2016-12-09 | 2016-12-09 | A kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206353126U true CN206353126U (en) | 2017-07-25 |
Family
ID=59346818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621353661.3U Active CN206353126U (en) | 2016-12-09 | 2016-12-09 | A kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206353126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546546A (en) * | 2016-12-09 | 2017-03-29 | 北京东方安杰科技有限公司 | A kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device |
-
2016
- 2016-12-09 CN CN201621353661.3U patent/CN206353126U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546546A (en) * | 2016-12-09 | 2017-03-29 | 北京东方安杰科技有限公司 | A kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7850901B2 (en) | Conditioning system and method for use in the measurement of mercury in gaseous emissions | |
| CN106546546A (en) | A kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device | |
| US11733148B2 (en) | Volatility-resolved chemical characterization of airborne particles | |
| CN204347045U (en) | For the Environmental emergency monitoring car of flow detection volatile organic matter | |
| US8107080B2 (en) | Environmental control of fluid samples, calibration, and detection of concentration levels | |
| CN101949835A (en) | On-line aerosol carbon component collecting analyser | |
| CN102455318A (en) | Continuous monitor for detecting aerosol sample | |
| CN206223643U (en) | A kind of gas phase molecular absorption spectrometer based on sensor and use infiltration absorption dehydration device | |
| US6346142B1 (en) | System for removing water from a gaseous sample | |
| CN112229893A (en) | Online monitoring system and method for high-resolution high-sensitivity rapid determination of volatile organic compounds | |
| CN109406435A (en) | The continuous on-line monitoring system of flue gas | |
| CN206353126U (en) | A kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device | |
| CN106546547A (en) | It is a kind of based on sensor and using infiltration absorption dehydration device gas phase molecular absorption spectrometer | |
| CN110038389A (en) | A kind of processing equipment and processing method of harmful exhaust | |
| JP2010096753A (en) | Mercury collector, mercury collecting unit, mercury analyzer, and its method | |
| CN208721484U (en) | A kind of flue gas pre-processing device | |
| CN104707448A (en) | Gas dewatering device and using method thereof | |
| CN213456762U (en) | Online monitoring system for high-resolution high-sensitivity rapid determination of volatile organic compounds | |
| CN107271236B (en) | Core-shell type aerosol generating system and application thereof in preparation of core-shell type aerosol | |
| US7799113B2 (en) | Conditioning system and method for use in the measurement of mercury in gaseous emissions | |
| JP5981447B2 (en) | Fluid transportation system | |
| CN104535499B (en) | Sulfur dioxide online monitoring method | |
| CN211453104U (en) | Integrated universal device for dewatering and sampling preconcentration | |
| CN203772613U (en) | Atmosphere dehumidification device | |
| CN209784284U (en) | Sampling device for detecting components of coke oven flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |